The cost of completely eliminating a bed bug infestation varies based on where you live and the method of treatment.
In general, the most affordable method of eliminating bed bugs is to do it in a single treatment. Heat treatments and Fumigation are extremely labor intensive and generally take 1-3 days to complete and therefor increase your cost.
Pesticides and Chemicals can be applied in a single treatment but have toxicity issues and do not always entirely eliminate bed bugs which require a second and sometimes third visit to apply additional chemicals. Over the years, bed bugs have developed resistance to man-made pesticides which makes it difficult to kill them all in a single visit.
BioPesticides for bed bugs are non-toxic and are developed using a specific fungus known as Beauveria bassiana that grows naturally in soils throughout the world and acts as a parasite in various arthropod species like Bed Bugs.